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Related Manuals for WattNode Plus WNC-3Y-208-FT10
Summary of Contents for WattNode Plus WNC-3Y-208-FT10
- Page 1 ® ® for L ORKS Installation and Operation Manual ● WNC-3Y-208-FT10 ● WNC-3Y-400-FT10 ● WNC-3Y-480-FT10 ● WNC-3Y-600-FT10 ● WNC-3D-240-FT10 ● WNC-3D-400-FT10 ● WNC-3D-480-FT10 Rev 3.33b Continental Control Systems (M6) http://www.ccontrolsys.com...
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Page 2: Fcc Information
Boulder, CO 80301 (303) 444-7422 FAX: (303) 444-2903 E-mail: techsupport@ccontrolsys.com Web: http://www.ccontrolsys.com WattNode is a registered trademark of Continental Control Systems, LLC. , Echelon, Neuron, LonTalk, LNS, and LonMaker are registered trademarks of Echelon orks Corporation. and the L Logo are managed, granted, and used by L International under a license granted by Echelon Corporation. -
Page 3: Table Of Contents
Wiring ............................18 Installation Summary ........................18 Service LED ..........................18 Communication Troubleshooting ....................19 Measurement Troubleshooting ......................19 Network Configuration ......................22 Identifying the WattNode ....................... 22 WattNode Reinitialization ....................... 22 Operating Instructions ......................23 Basic Configuration ........................23 Verify Operation ........................23 Measurement Overview ......................23 Network Variables ......................... - Page 4 Maintenance and Repair ........................ 32 Specifications ........................33 Models ............................33 Firmware ............................33 Current Transformers ........................33 Measurement ..........................34 Accuracy ..........................34 Electrical ............................35 Communication ..........................36 Certifications ..........................36 Environmental ..........................36 Mechanical .............................37 Warranty ..........................37 Contents...
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Page 5: Overview
L networks. orks Continental Control Systems also provides a free LNS plug-in for use with the WattNode. The WattNode plug-in simplifies configuration and browsing. Measurements The WattNode Plus measures the following: ● True RMS Power - Watts (Phase A, Phase B, Phase C, Sum) ●... -
Page 6: Front Label
B: Functional ground. This terminal should be connected to earth ground if possible. It is not required for safety grounding, but the accuracy of the WattNode may be reduced if this terminal is not connected. C: Neutral. This terminal should be connected to neutral. -
Page 7: Symbols
J: UL Listing mark. This shows the UL and cUL (Canadian) listing mark and number “3KNN”. L: Current transformer (CT) voltage rating. These markings “0.333V~” indicate that the WattNode must be used with current transformers that generate a full-scale output of 0.333 VAC (333 millivolts AC). -
Page 8: Installation
2 (normally only non-conductive pollution; occasionally, a temporary conductivity caused by condensation must be expected). 11) Do not drill mounting holes using the WattNode as a guide; the drill chuck can damage the WattNode housing or screw terminals. -
Page 9: Electrical Service Types
Electrical Service Types Below is a list of service types, with connections and recommended WattNode models. Note: the WattNode ground connection improves measurement accuracy, but is not required for safety. Phase to Phase to Electrical Model Type Neutral Phase Service Types... -
Page 10: Single-Phase Three-Wire
Figure 3: Single-Phase Three-Wire Connection Recommended WattNode Models The following table shows the WattNode models that can be used. If neutral may or may not be present, you should use the WNC-3D-240-FT10 (see Single-Phase Two-Wire without Neutral below), since this model does not require neutral. If phase B may not be present, you should use the WNC-3Y-208-FT10 (see Single-Phase Two-Wire with Neutral above). -
Page 11: Single-Phase Two-Wire Without Neutral
WattNode to the ground terminal; this will not cause any ground current to flow because the neutral terminal is not used to power the WattNode. If you have a grounded leg configuration, you can save money by removing the CT for the grounded phase, since all the power will be mea- sured on the non-grounded phases. -
Page 12: Three-Phase Four-Wire Wye
A, B and C terminals in any order, so long as the CTs are connected to matching phases. It is important, however, that you connect the neutral line correctly. For these models, the WattNode is powered from the neutral and phase A terminals. - Page 13 A, B and C terminals in any order, so long as the CTs are connected to matching phases. For these models, the WattNode is powered from the phase A and phase B terminals. Note: all delta WattNode models provide an optional neutral connection, which allows delta WattNode models to measure both wye and delta configurations.
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Page 14: Mounting
Remove the screw ter- minals by pulling outward while rocking from end to end. The WattNode or Figure 7 may be used as a template to mark mounting hole positions, but do not drill the holes with the WattNode in the mounting position because the drill bit or chuck may damage the WattNode housing or connectors. -
Page 15: Selecting Current Transformers
CT is the labeled rating divided by the number of times that the wire passes through the CT. All the CTs used with a WattNode Plus should have the same rated amps. You cannot readily mix two different current ratings (say two 200A CTs and one 50A CT), because there is a single nciCtAmps configuration variable that applies to all phases. -
Page 16: Circuit Protection
Next, connect the CTs to the WattNode. Route the twisted black and white wires from the CT to the WattNode. Any excess length may be trimmed from the wires if desired. Strip or trim the wires to expose 1/4” (6 mm) of bare wire. The current transformers connect to the six position black screw terminal block. -
Page 17: Connecting L On W Orks Network Wiring
WattNode. If there is any doubt that the voltage rating of the WattNode is correct for the circuit being mea- sured, then before applying power to the WattNode, disconnect the green screw terminal from the WattNode and then turn on the power. -
Page 18: Wiring
● You may put two sets of wires in each screw terminal to make it easier to daisy-chain the network from one WattNode to the next. If you do this, we recommend that you twist the wires tightly together before putting them into the screw terminal to ensure that one wire doesn’t pull free, causing communication problems. -
Page 19: Communication Troubleshooting
WattNode to a laptop to verify that communication works. If this is the problem, you may need to use shielded network cabling, limit the length of the cabling, add terminators at both ends of the cable, or use FT10 repeaters. - Page 20 ○ The CT or its wires are damaged. ○ There is strong electrical interference, as might occur if the WattNode is in very close proximity to a variable speed drive (also called variable frequency drive or inverter).
- Page 21 CT leads are long, interference can occur. Try moving the WattNode at least one meter (three feet) away from any VFDs. Use short CT leads if possible. NEVER install the WattNode downstream of a VFD: the varying line frequency and extreme noise will cause problems! ○...
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Page 22: Network Configuration
The WattNode may be reinitialized to clear its configuration settings. Reinitialization can be used when the WattNode is installed in a new location or on a new network, or to restore all configura- tion network variables to the factory default values. -
Page 23: Operating Instructions
Verify Operation You should be able to read several variables to check that the WattNode is correctly installed and measuring power and energy. You should probably verify variables in the following sequence: ●... - Page 24 should be protected from unauthorized tampering. The LonTalk protocol supports authentication to prevent unauthorized access for specified variables. You must enable authentication with your network management software. Once protected, the authentication key is required to access these variables, so be sure to record the key securely. Name SNVT Type Units...
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Page 25: General Variables (Nodeobject)
NORMAL, RQ_UPDATE_STATUS, and RQ_REPORT_MASK requests are supported. You can make a request of the entire WattNode with using the NodeObject or one of the functional blocks. In response to each request, the object’s status is returned in nvoStatus. The status variable nvoStatus also indicates if the request was made of an invalid object number, or if the object doesn’t support the request made of it. -
Page 26: Energy Variables
(like a utility meter that only needs to be read once a month). All energy variables are preserved through power failures. For bidirectional applications, such as installations with PV panels, the WattNode measures the net energy sum: nvoEnergySum can count both up and down, depending on whether you are consuming (importing) or generating (exporting) energy. -
Page 27: Power Variables
Demand is defined as the average power over a specified time interval. Typical demand inter- vals are 5, 10, 15 (default), 30, 60, etc. up to 720 minutes, but the WattNode supports arbitrary demand intervals from 5 to 720 minutes (12 hours). The WattNode records the peak demand with a time stamp for metering applications where the measurements may only be accessed weekly or monthly. - Page 28 Power Curve Demand Demand Demand Demand Demand Demand Demand Demand Subinterval Subinterval Subinterval Subinterval Subinterval Subinterval Subinterval Demand Demand Interval Interval Demand Demand Interval Interval Demand Interval Figure 10: Rolling Demand with Three Subintervals nciDemPerMins / nciDemSubints The variable nciDemPerMins sets the demand interval in minutes (default 15 minutes), and nciDemSubints sets the number of demand intervals (default 1).
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Page 29: Voltage Variables
These are the RMS AC voltages for each phase. These are measured relative to the neutral connection on the WattNode. If neutral is not connected, then these are measured relative to the ground connection on the WattNode. The WattNode does not measure line-to-line voltages. -
Page 30: Configuration Properties
These are the per-phase reactive power measurements. Configuration Properties The WattNode also includes configuration properties (CPs), which are similar to “nci” network variables, but consume fewer resources. The WattNode uses CPs for less commonly accessed quantities, including factory calibration. These are preserved over power outages. -
Page 31: Calibration Configuration Properties
Creep refers to the situation where the wheel on an traditional electro-mechanical energy meter moves even though there is no power being consumed. The WattNode has no wheel, but still must address this situation. All electrical systems have some noise, which can cause small read- ings in the absence of any power consumption. -
Page 32: Wattnode Errors
The WattNode tracks internal errors and warnings. The most recent error is logged and preserved over power failures so that it can be recovered by the WattNode Plug-in or by any network management tool. For errors, contact CCS, because the WattNode may need service. Warnings can generally be disregarded unless they occur repeatedly. -
Page 33: Specifications
3–4 Table 5: WattNode Models *Note: the delta models have an optional neutral connection that may be used for measuring wye circuits. The delta WattNode models use the phase A and phase B connections to power the WattNode. Firmware Firmware Version(s): 3.33 XIF file(s): WNC-FT-Plus-333.XIF... -
Page 34: Measurement
WattNode and void the warranty. Over-Current Limit: 120% of rated current. Exceeding 120% of rated current will not harm the WattNode but the current and power will not be measured accurately. Accuracy The following accuracy specifications do not include errors caused by the current transformers. -
Page 35: Electrical
The WattNode’s power supply draws most of the total power consumed, while the measurement circuitry draws 1-10% of the total (6-96 milliwatts per phase, depending on the model). Due to the design of the power supply, the WattNode draws more power at 50Hz. Active Power at... -
Page 36: Communication
The line voltage measurement terminals on the WattNode are rated for the following CAT III voltages (these ratings also appear on the WattNode front label): Model CAT III Voltage Rating WNC-3Y-208-FT10 240 VAC WNC-3D-240-FT10 WNC-3Y-400-FT10 400 VAC WNC-3D-400-FT10 WNC-3Y-480-FT10 480 VAC... -
Page 37: Mechanical
Mechanical Enclosure: High impact, ABS plastic Flame Resistance Rating: 94V-0, IEC FV-0 Size: 143mm × 85mm × 38mm (5.63” × 3.34” × 1.5”) Weight: 320gm (11.3oz) Connectors: Euroblock style pluggable terminal blocks Green: 22 to 12 AWG (1.0mm - 3.2mm), 600 V Black: 22 to 12 AWG (1.0mm - 3.2mm), 300 V Warranty All products sold by Continental Control Systems, LLC (CCS) are guaranteed against defects in...
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